model number = 84; range = 82 to 89. The cell line is aneuploid female (XX/XXX/XXXX), with chromosome counts in the hypertetraploid to near-tetraploid range. All normal chromosomes are represented by at least one copy, with most chromosomes having three or four copies present per karyotype. Five marker chromosomes are found: del(1)p35), der(7)t(1;7)(q11;q32), unknown, t(2q;?), unknown isochromosome. Several are present in multiple copy. Alterations in the q arm of chromosome N1 are in accordance with the report by M.J. Siciliano, et al., Cancer Res. 39: 919, 1979.

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Derivation

This is one of a series of breast tumor lines (ATCC HTB-23 through HTB-26) isolated from pleural effusions and characterized by R. Cailleau and associates in 1973.

Clinical Data

56 years

Black

female

Tumorigenic

Yes

Effects

Yes, Tumors developed within 21 days at 100% frequency (5/5) in nude mice inoculated subcutaneously with 10(7) cells.

Complete Growth Medium

The base medium for this cell line is ATCC-formulated Leibovitz's L-15 Medium, Catalog No. 30-2008. To make the complete growth medium, add the following components to the base medium: fetal bovine serum to a final concentration of 10%.

(Note: The L-15 medium formulation was devised for use in a free gas exchange with atmospheric air. A CO2 and air mixture is detrimental to cells when using this medium for cultivation)

Subculturing

Remove medium, and rinse with 0.25% trypsin, 0.53 mM EDTA solution. Remove the solution and add an additional 1 to 2 mL of trypsin-EDTA solution. Allow the flask to sit at room temperature (or at 37°C) until the cells detach. Add fresh culture medium, aspirate and dispense into new culture flasks.

Subcultivation Ratio: A subcultivation ratio of 1:2 to 1:6 is recommended

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